Question: How do you make Human Growth Hormone, In a Medicine Form ? e.g (for people who don't produce enough themseleves)

Recombinant DNA (rDNA) is when genes or DNA is inserted into the DNA of a microorganism (like a bacteria) and the microrgaism uses this gene to make whatever it is the gene makes. For example there is a gene for Human Growth Hormone. What scientists did was put this gene into the DNA of a bacteria and let the bacteria make lots of human growth hormone.

We can then collect all the human growth hormone and use it as a medicine!